Gear transmission for textile machines



Ap l 6, 94 w. R. GORDON 2.197.361

GEAR TRANSMISSION FOP TEXTILE MACHINES Filed March 21, 1939 INVENTOR.

W12. G'ordon W Z jTTORNEY" Patented Apr. 16,, 1940 um Eos ArEs PA ENT OFFICE,

,, GEAR TRANSMISSION Eon TEXTILE MA ES William "R. 2 Gordon, Stoningtom- Conn., assignor to The Atwood Machine Company, Stonington,

Conn, a corporation of New Jersey Application'March 21, 1939, SerialN o. 263,124

aciaiinfs; (c1. 74-355 'yarn to be driven at two selected speeds one in each direction by axial adjustment of'an' intermediate gear carrying shaft. L

A feature of importance of the invention'is that an intermediate shaft sleeve has opposed bevel gears thereon having widely different numbers of teeth, these gearsbeing movable with the shaft or sleeve to positions adapted to engage one of the gears with its mating gear in one position and the other gear with another mating gear inthe' other position. I

Another feature of importance is that in either. position the shaft or sleeve may be secured against axial movement by simple means including a key inserted in either of two positions within a shaft connected to and by which the gear carrying shaft or sleeve may be moved.

With the above and other objects in view the invention may include the features of construction and operation set forth in the following specification and illustrated in the accompanying drawing.

In the accompanying drawing annexed hereto and forming a part of this specification, I have shown the invention embodied in the driving connections for a twisting or doubling and twisting machine for textile yarns but it will be understood that the invention can be otherwise embodied and that the drawing is not to be construed as defining or limiting the scope of the invention, the claims appended to this specification being relied upon for that purpose.

In the drawing:

Fig. 1 shows a cross sectional view of thedriving and change speed mechanism in one operative position, and

Fig. 2 shows a longitudinal section through one end of the intermediate shaft in its other operative position. i I

In the above mentioned drawing there has been shown but one embodiment of the invention which is now deemed preferable, but it is to be understood that changes and modifications may be made within the scope of the appended claims without departing from the spirit of the invention.

Briefly, and in its preferred aspect, the invention may include the following principal parts:

first, a driving shaft having a driving pulley the intermediate shaft ll.

on anti-friction bearings 20 and is retained 35 thereon bymeans of which the shaft may be rotated at constant speed; second, two spaced bevel gears keyed to said shaft and having a different number of teeth; third, a driven shaft having a driving pinion atone end; fourth, a sleeve 5 slidably mounted thereon at an intermediate portion; fifth; bevel gears on said sleeve-adaptedto mesh respectively with said bevel gears on said driving shaft; sixth, a key slidable within said intermediate shaft and engaging said sleeve; 10

seventh, a shifting shaft for said sleeve; and

eighth, a locking pin or-key for said sleeve to retain said sleeve in either of these operative -mounted for rotation within a housing or frame member adapted tonbe bolted or otherwise secured to an end of a textile machine. At the upper end of this shaft I0 is a driving pulley l2 which may be rotated at any desired constant speed. At the lower end of the shaft II] are bevel gears l3 and M secured in spaced positions thereon. As shown in the drawing the shaft I0 may be mounted on antifriction bearings. l5 adjacent its opposite ends.

Mounted within the housing at its lower end and disposed at right angles to the driving shaft ID is a driven shaft l6 adapted for connection to a feed, twist or other mechanism of the textile machine. Disposed above the driven shaft it is an intermediate shaft l1. At one end of shaft 5 is a driving gear l8 meshing with a pinion IS on Shaft H is mounted against axial movement'in any preferred or usual manner. p I

Slidably mounted on the intermediate portion of the shaft H is a sleeve 2| having at oneend' a large bevel gear 22 preferably formed integrally therewith. In one axial position of the sleeve 2| bevel gear 22 meshes with gear l3 on the driving shaft Ill and drives shaft ll at a relatively slow speed in a manner presently to be described. On the opposite end of sleeve 2| from the'gear 22 is a gear 23 meshing, in the position shown in the drawing, with the bevel gear l4. Gear .23 is held in place on shaft IT .by means of a threaded member 24 engaging shift rod or shaft 21 through which the key 25 transversely extends. From the above it will be seen that by axial movement of the rod or shaft 2'! the sleeve 2| can be moved axially relative to shaft H to engage gear 22 or gear 23 with its mating gear I3 or M respectively. To axially adjust and retain the rod 21 in its longitudinal position to engage one or the other pair of gears the rod 2'l is extended beyond the end of intermediate shaft l1 and is provided with two spaced annular grooves 28 and with two transverse slots 29. single transverse slot through which may. extend a key or pin 30. In either operative position of the rod 2'1 pin passes through the transverse slot in shaft H and through one of the slots 29 in the rod 21. To prevent the pin 30 from accidentally coming out of its ,slots during operation a collar 3! is fitted over the end of shaft ll far enough to enclose the pin 30. Collar 3! is retained in position by means of a screw 32 bearing against the rod 21 within one of its grooves '28. In either position of the rod 21 screw 32 may fit into one of the grooves 28. To change the speed of shaft l6 relative to its driving shaft III by axially moving the sleeve 2! it is only necessary to remove the collar 3! from the rod 21, remove the pin 30 and after shifting the rod 21 to the opposite position replace the pin 30 in the other slot and again fasten the collar 3! over the ends of shaft H and rod 21.

I claim as my invention:

1. A gear transmission for textile machines comprising in combination, a driving shaft having two spaced gears thereon, a driven shaft, an intermediate shaft, gears drivingly connecting said intermediate and driven shafts, a sleeve slidable on said intermediate shaft, spaced gears The shaft I7 is provided with a thereon selectively usable with the gears on said driving shaft, means to axially position said sleeve to engage its gears with their mating "gears respectively, including a shifting rod for said sleeve, and a transverse key extending through a slot in said intermediate shaft and through either of two slots in said shifting rod to retain the rod and sleeve in axial position.

*2. A geartransmission for' textile machines comprising in combination, a driving shaft having two spaced gears thereon, a driven shaft, an intermediate shaft, gears drivingly connecting said intermediate and driven shafts, a sleeve slidable on said intermediate shaft, spaced gears thereon selectively usable with the gears on said driving shaft, means to axially position said sleeve to engage its gears with their mating gears respectively, including a shifting rod for said sleeve, a transverse key disposed within said intermediate shaft and shifting rod to retain said rod in either of two positions, and a collar 'fitting overnthe end of the intermediate shaft to 'through one of two alternately usable spaced slots in said shift rod, and a collar secured to said shift rod to retain said key in position.

WILLIAM R. GORDON. 

